矿业科学学报2025，Vol.10Issue(2)：271-284,14.DOI:10.19606/j.cnki.jmst.2024929
掘进机循环负压降尘装置参数优化研究
Optimizing parameters for cyclic negative pressure dust suppression devices for roadheaders
摘要
Abstract
Effectively managing dust in the advancing headings of coal mines is essential for ensuring underground operational safety.Traditional dust suppression methods,such as spraying,are relatively inefficient in high-concentration dust environment during excavation operations.This study therefore in-troduces a cyclic negative pressure dust suppression device for roadheaders via synergistic enhancement of negative pressure suction and spray dust suppression.We set up a simulation model for numerical simulation on the influencing factors of jet stream suction mechanisms.We optimized the parameters,including the shape of injection nozzle,blade configuration,and the number of Venturi tubes,based on the variation rules of the negative pressure flow field both inside and outside the device.Similarity ex-periments were also conducted to validate dust suppression efficiency of the optimized device based on its variation patterns in internal and external cyclic negative pressure flow field.Results indicate that under constant spraying conditions,the device exhibited optimal performance in terms of cyclic negative pressure with a conical nozzle,8 blades,a blade speed of 2 400 rpm,10 Venturi tubes,and a blade installation 300 mm from the nozzle inlet,resulting in a dust suppression efficiency of up to 87.4％in the similar model.关键词
粉尘防治/循环负压/射流卷吸机制/参数优化Key words
dust control/cyclic negative pressure/jet-entrainment/parameter optimization分类
矿山工程引用本文复制引用
邢旭文,何少杰,田园,肖鹏,武琨琪,张英华,张金宝,滕胜杰..掘进机循环负压降尘装置参数优化研究[J].矿业科学学报,2025,10(2):271-284,14.基金项目
华能煤业有限公司自立科技项目(HNKJ21-HF37) （HNKJ21-HF37）
